Justin Bieber — You’re Not In A Parade, Sit Down!

Smug .... is the best way to describe Justin Bieber over the past 12 hours or so.

From his smiling mug shot to his impromptu parade when he left jail on Thursday, the teen idol is not making friends by his behavior.

The 19-year-old, who isn't even old enough to legally drink, was arrested early Thursday morning in Miami for DUI. The arrest report obtained by RumorFix describes him as a "flushed face, bloodshot eyes, and the odor of alcohol on his breath."

He admitted to investigators to using prescription pills, marijuana and beer. He was also charged with resisting arrest -- police say he dropped the F-bomb several times talking to them saying, "Why the f**k are you doing this?"

To make things worse, he was driving with an expired driver's license and accused of drag racing a Lamborghini rental car with his buddy Khalil Sharieff.

The cocky Bieber never showed any remorse or fear:

He's smiling in his mug shot.

In court, he rolled up his sleeves to show of f his tattoos and it appears as though he puffed his hair.

When he was released from jail on a $2,500 bond, he was smiling from ear to ear.

He then jumped in his Escalade and popped out of roof and waved to his fans as if he were in a parade.

Thursday's incident marks the first time Justin has been arrested, although he is under investigation for allegedly egging his Calabasas neighbor's home.

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